Stoneworking-machine.



s. w. vGANTT. STDNEWORKING MACHINE. y

APPLICATION FlL'ED OCT. 9, S15- f 1 Patentedy Oct. 31,1916.

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/4 fe y G. w. GANTT. sToNEwoRKlNG MACHINE.

APPLICATION FILED OCT-9. 1915..

Patented oct. 31,1916.

G. W. GANTT.

STONEWORKING MACHINE.

' `APPLIc/Tlou FILED ocr. a. 1915. 1,203,527. Patented 00t..31,1916.

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35 perpendicular l position.

pinion 2O mounted betiveen the side pieces ll and arranged on a shaft The shaft 2l carries ay gear Wheel which meshes Withr a pinion 23. rlhe pinion Q3 is provided with a crank` handle 24 and it is locked i against rotary movement by a pavfl or dog 25 pivotally mounted on the adjacent side Vpiece ll` and having a Weighted engaging portion. which is held in engagement with the pinion. 23 by gravity. Ey rotating the 2o .pinion 23 the rack bar ismoved inwardly oroutwardly to arrange a pivoted oscillatory casing 26 in the desired position.

T he casing 26 which has spaced side plates 27 is-provided with a horizontal rod 28 ex- 25 tending through a longitudinal bore Q9 oit' the rack bar and provided With a threaded outer end 30 for the reception of a nut 3l for detachably securing the rod in the bore or opening ofthe rack bar. The rod Q8 3o forms va pivot for the casing 26 Which is adapted to be turned at different angles or Vinclinations and as the casing rotates on a horizontal axis it is adapted to be turned kto various inclinations at either side of a The casing 26 is equipped With inner and outer flanged guide rollers 32 and 33 arranged in pairs at the inner and outer portions of kthe casing and receiving an automatically adjustable counterbalancing bar 34 and a slidable tool carrying bar 35. The bars 34 and 35 Which are simultaneously movable in opposite directions are provided With teeth 36and 37 arranged` in grooves 3S and 39 and meshing With'an interposed gear Wheel 40. The gear Wheel 40 or pinion meshes With tlieteetli of ther-ack bars 34 and 35 and is mounted on a shaft or spindle 4ll which is journaled in the side plate 27 of the casing 26. The slidable tool carrying rack bar 35 is provided at its outer end with a head 42 having secured to it a plate 43 provided with a flange 44 and equipped with bolts 45. The flange ofl the head is provided with an opening to receive the casing or cylinder 46 of a pneumatic hammer or tool which is retained in the opening by the said bolts 45. Any form oi pneumatic tool may ot' course be employed and various tools may be operated for Working a stone in the rough and for the various operations of dressing the stone. VAlso any other suitable tool or device for operating on a stone maybe carried by the slidable rack bar 35 which is adapted to be oscillated to vmove the tool over a stone. The plate 43 pivoted pavvl or rlllie rounded portion of the standard has v mounted a verticallyv adjustable casing 49 having spaced side platesand provided with a central vertical sectional bearing 50 receiving the vertical standard. rl`he casing is provided with spaced upper and lower rollers 5l arranged in pairs and receiving a' slidable tool supporting frame or carrier 52 ar "anged between the rollers 5l and oomposed of spaced longitudinal bars 53 connected at the front end of the carrier by a lhead 56 having an opening formed in a iiange 57 and adapted to receive a pneumatic tool which is arranged in a vertical position for operating upon the upper face or top of the stone. The head 56 is equipped `with a suitable handle 58 similar to the handle of the oscillatory slidablyrmounted rack bar. Y

The casing 49 which is adapted to be raised and lowered is equipped with hoisting mechanism consisting of a hoisting rope or cable 59 arranged on a pulley 60 and attached at one end at 61 to the casing and at its other end to a Windlass drum 62 journaled inthe casing 49 atone end thereof and equipped with a ratchet Wheel 63 provided with a crank handle 64 and engaged by a dog 65 iiorv locking the casing 49 in its vertical adjustment. The roller 60 is journaled in `a bifurcated bearing bracket 66 having a rounded lower portion or pivot 67 arranged in a bearing socket 68 in the upper end of the standard. The slidable frame is adapted to be raised and lowered by means of the casing and the hoisting mechanism and it is also capable of permit-ting the tool carrying frame to slide' inwardly and outwardly and to be oscillated horizontally to operate over the dierent portions of the top of a stone.

That is claimed is l. A stone Workingmachine including a slidable'bar arranged horizontally and movable inwardly and outwardly, means for supporting the same, an oscillatory support carried by the said lbar and freely movable on a horizontal axis, and a slidable tool supporting bar mounted on the said support and movable freely transversely oi the axis thereof, said tool supporting bar being provided at the outerend with means for holding a tool at an angle tothe samewhereby `the tool may be carried freely over the vertical faces of a stone at the will of the operator.

v 2. A stone working machine including. avertical standard and means carriedrloyl the standard and including a slidable support-y support Vmounted to oscillate freely on a` horizontal axis, a tool carrierconsisting of a bar slidable freelyin the support at an angle to the axis thereof and provided at the outer end with a head having means for holding a tool at an angle to the said bar whereby the tool may be moved freely at the will of the operator over the vertical face ofa stone.

il. A stone workingmachine including a support mounted to oscillate freely on a horizontal axis a tool'carrier consisting of a har slidable Ireely in the support at an angleto vthe axis thereof and provided at the outer end with a head having means for holding a tool at an angle to the said bar whereby the tool may be moved freely at the Copies of this patent'may lne obtained for will ofthe operator over the `vertical face of a stone, and a counter-'balancing bar slidably y y. mounted in the support and actuated by the said bar to move-the counter-balancing bar t in the'o-pposite direction from'the tool'carrying bar to` counterbalance the same in the various adjustments thereof.

5. A stone` working machine including a support mounted to oscillate freely. onA aV horizontal axis, a tool carrier consisting of a v bar slidable freely in thesupport at an angle to the axis thereof 'and provided at the outer' end with ahead having means for holding a tool at an ang-le, to the said bar vwhereby the tool may be moved freely at the Vwillof the operator over the vertical face of a stone,4 a counter-balancingbar also slidably mounted in the support and movable in the opposite" direction from the' tool carryingbar, 'said bars being provided at Atheir opposed faces with teeth, and an interposed pinion meshing with thelsaid teeth to cause the tool carrying bar to actuate the counters-balanc` ing bar to counter-balance the -tool carrying bar automaticallyl In testimony whereof Ifaflix my signature,

in presence of two witnesses:u

f witnesses; i

, J. S. BELTON,

J. W. MARTIN.`

ve cents each, by addressing the"Commissioner of Patents,

Washington, D. C.

Y GEORGE w. GANTT. 1 

